Hardware Overview Ky-039 is a cheap Heartbeat Sensing Module. This Heartbeat module contains bright infrared (IR) led and a photo-transistor that helps to detect the pulse of the hum finger, There is a red LED … Read more
KY-039
Hardware Overview Ky-039 is a cheap Heartbeat Sensing Module. This Heartbeat module contains bright infrared (IR) led and a photo-transistor that helps to detect the pulse of the hum finger, There is a red LED … Read more